#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <opencv2/opencv.hpp>


#define BYTE unsigned char
#define NUM_CLASSES 2
#define BUF_SIZE 10000


struct detection{
    cv::Rect_<float> bbox; 
    float prob[NUM_CLASSES];
    float objectness;
    int sort_class;
	int id;    
};

void error_handling(const char *message);

int main(int argc, char *argv[])
{
	int serv_sock;
	int clnt_sock;

	struct sockaddr_in serv_addr;
	struct sockaddr_in clnt_addr;
	socklen_t clnt_addr_size;

	char message[]="Hello World!";
	
	if(argc!=2){
		printf("Usage : %s <port>\n", argv[0]);
		exit(1);
	}
	
	serv_sock=socket(PF_INET, SOCK_STREAM, 0);
	if(serv_sock == -1)
		error_handling("socket() error");
	
	memset(&serv_addr, 0, sizeof(serv_addr));
	serv_addr.sin_family=AF_INET;
	serv_addr.sin_addr.s_addr=htonl(INADDR_ANY);
	serv_addr.sin_port=htons(atoi(argv[1]));
	
	if(bind(serv_sock, (struct sockaddr*) &serv_addr, sizeof(serv_addr))==-1 )
		error_handling("bind() error"); 
	
	if(listen(serv_sock, 5)==-1)
		error_handling("listen() error");
	
	clnt_addr_size=sizeof(clnt_addr);  
	clnt_sock=accept(serv_sock, (struct sockaddr*)&clnt_addr,&clnt_addr_size);
	if(clnt_sock==-1)
		error_handling("accept() error");  
	
    //-------------------------------TCP建立连接-----------------------------------
	
    struct detection src;
    src.bbox = cv::Rect_<float>(100, 100, 200, 200);
    src.prob[0] = 0.6;
    src.prob[1] = 0.7;
    src.objectness = 0.8;
    src.sort_class = 1;
    src.id = 3;

    send(clnt_sock, &src, sizeof(struct detection), 0);
    
	close(clnt_sock);	
	close(serv_sock);
	return 0;
}

void error_handling(const char *message)
{
	fputs(message, stderr);
	fputc('\n', stderr);
	exit(1);
}